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CoreXY bed levelling points reversed causing inaccurate level

Posted by cfresh 
CoreXY bed levelling points reversed causing inaccurate level
January 04, 2020 11:19PM
Hi There,
I have a Tronxy X5SA Pro CoreXY printer and I have replaced the board with an SKR1.4 Turbo running Marlin 2.0.
The X and Y are homing correctly at the LF on the Min Stops. I have the bed levelling set to BILINEAR and the G29 command probes the 330x330 bed in a 4x4 pattern.

The issue...

The G29 probing starts at the LR of the bed and this makes all the Z heights skewed when printing resulting in too high and too low points in the bed. I have searched all over and there are some articles around that mention my issue but there seems to be no definitive answer. If I can get the probing to start at the LF of the printer (where X Y 0,0 is) and run clockwise then I believe I should then get the correct Z heights as expected. Any help here would be appreciated.

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